* html .u1_original {
    background-image: none;
    filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src="动态键盘布局排版规则_files/u1_original.png");
}

* html .u3_original {
    background-image: none;
    filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src="动态键盘布局排版规则_files/u3_original.png");
}

* html .u5_original {
    background-image: none;
    filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src="动态键盘布局排版规则_files/u5_original.png");
}

